I have a vectra which dh says is just a cavalier with a different name. I know he's teasing me but they are fairly similar (he says exactly the same) anyway.
It's British which means the parts are in te uk and fairly cheap in comparison with some foreign cars. There are also pleanty of them around and in scrapyards which means if you needed second hand bits for it you could get them easily. Mine is very reliable- don't know what its like with bodywork as its only 3. From what I remember of people that have had them they are good solid reliable cheap to fix and service cars.